Check X509Certificate::CreateFromHandle result.

net/third_party/mozilla_security_manager/nsPKCS12Blob.cpp

Index: net/third_party/mozilla_security_manager/nsPKCS12Blob.cpp
diff --git a/net/third_party/mozilla_security_manager/nsPKCS12Blob.cpp b/net/third_party/mozilla_security_manager/nsPKCS12Blob.cpp
index a2466559da444ee0aaba932987b908c8db742a82..3b607e13b5e5da029051f514e01d9daa9562d106 100644
--- a/net/third_party/mozilla_security_manager/nsPKCS12Blob.cpp
+++ b/net/third_party/mozilla_security_manager/nsPKCS12Blob.cpp
@@ -225,8 +225,10 @@ nsPKCS12Blob_ImportHelper(const char* pkcs12_data,
     if (imported_certs) {
       // Empty list of intermediates.
       net::X509Certificate::OSCertHandles intermediates;
-      imported_certs->push_back(
-          net::X509Certificate::CreateFromHandle(cert, intermediates));
+      scoped_refptr<net::X509Certificate> x509_cert =
+          net::X509Certificate::CreateFromHandle(cert, intermediates);
+      if (x509_cert)
+        imported_certs->push_back(std::move(x509_cert));
     }
 
     // Once we have determined that the imported certificate has an